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Key Takeaways from Scatter Plot:

1. The Sham CES (No Stimulation) group appears to have a negative trend, suggesting that higher usage may be associated with a greater reduction in pain.

2. The Active CES (Alpha-Stim) group (blue) shows a slight positive trend, indicating that increased usage does not consistently lead to a larger reduction in pain scores.

3. The change in pain score does not show a strong correlation with total device usage time for either group.

Key Takeaways from Box Plot:

1. We can find that there are two notable outliers observed at time point 2:

• One from the Sham CES group with a t-score of 77.5.
• One from the Active CES group with a t-score of 46.7.

2. Lower sleep quality t-score indicates better sleep quality. The Active CES group shows a decreasing median T-score, indicating improved sleep quality (T1: 61, T2: 59.55, T3: 57.20).

3. Within the Sham CES group, the median t-score shows a decreasing trend (T1: 62, T2: 58.15, T3: 58.10). Additionally, at time points 1 and 3, the median sleep quality t-score is higher in the Sham CES group than in the Active CES group. However, the Active CES group demonstrates greater improvement in sleep quality compared to the Sham CES group.